CN220097082U

CN220097082U - CFM56-7B engine two-number bearing support unit body storage transport case

Info

Publication number: CN220097082U
Application number: CN202321514027.3U
Authority: CN
Inventors: 陈伟安; 申策; 彭建巍; 邓琪; 吴健生
Original assignee: Guangzhou Aircraft Maintenance Engineering Co Ltd
Current assignee: Guangzhou Aircraft Maintenance Engineering Co Ltd
Priority date: 2023-06-13
Filing date: 2023-06-13
Publication date: 2023-11-28
Anticipated expiration: 2033-06-13

Abstract

The utility model discloses a CFM56-7B engine second bearing support unit body storage and transportation box, which comprises a box body and a fixing frame arranged in the box body, wherein a shock absorption support is arranged at the bottom of the box body, and the bottom of the fixing frame is detachably connected with the shock absorption support; the mount includes bearing dish, bearing stop plate and No. two bearing stop plates, and the bearing dish is used for bearing and fixed bearing support housing, and the middle part of bearing dish is equipped with the mesopore, and No. two bearing stop plates are just to establishing in the below of mesopore, and No. two bearing stop plate's centre is equipped with the spacing groove of indent, and the spacing groove is used for the cooperation cover at No. two bearing's tip, and No. one bearing stop plate passes through buffer gear to be set up at the top of mount, and No. one bearing stop plate is used for pressing on No. one bearing's terminal surface to with No. one bearing's terminal surface fixed connection. The utility model is suitable for the storage and transportation of the bearing support unit body of the No. two of the CFM56-7B engine, and can better protect the bearing support unit body of the No. two.

Description

CFM56-7B engine two-number bearing support unit body storage transport case

Technical Field

The utility model relates to storage equipment for aircraft engine components, in particular to a storage and transportation box for a first-number and second-number bearing support unit body of a CFM56-7B engine.

Background

The bearing support unit (22 x unit) of the CFM56-7B engine is an important component of the CFM56-7B engine, so that the storage and transportation requirements are strict.

The general structure of a bearing support unit body of a No. two bearing of a CFM56-7B engine is as follows: the outside of the bearing support shell is provided with a truncated cone-shaped bearing support shell, the middle part of the bearing support shell is provided with a first bearing and a second bearing, the end part of the first bearing is exposed at the smaller end part of the bearing support shell, and the end part of the second bearing is exposed at the larger end part of the bearing support shell and extends out of the bearing support shell.

The existing storage and transportation of the bearing support unit body of the CFM56-7B engine is to directly fix the bearing support unit body in the box body, however, the exposed parts of the bearing and the bearing are not additionally fixed, and in the storage and transportation process, the bearing and the bearing are easy to rotate and shake, so that friction is generated, the bearing support unit body is damaged, the installation performance of the bearing support unit body is affected, and an idle stop event is caused.

Disclosure of Invention

The utility model aims to provide a storage and transportation box for a first-size and second-size bearing support unit body of a CFM56-7B engine, which can better protect the first-size and second-size bearing support unit body.

The aim of the utility model is achieved by the following technical scheme:

a CFM56-7B engine a number two bearing support unit body stores transport case, its characterized in that: the device comprises a box body and a fixing frame arranged in the box body, wherein a shock absorption support is arranged at the bottom of the box body, and the bottom of the fixing frame is detachably connected with the shock absorption support; the mount includes bearing dish, bearing stop plate and No. two bearing stop plates, bearing dish is used for bearing and fixed No. two bearing support cell cube's bearing support casing, the middle part of bearing dish is equipped with the mesopore, no. two bearing stop plates are just to establishing in the below of mesopore, no. two bearing stop plate's centre is equipped with the spacing groove of indent, the spacing groove is used for the cooperation cover at No. two bearing's of No. two bearing support cell cube tip, no. one bearing stop plate passes through buffer gear and sets up at the top of mount, no. one bearing stop plate is used for pressing on No. two bearing's of No. two bearing support cell cube terminal surface to with No. one bearing's terminal surface fixed connection.

Optionally, the buffer gear includes intermediate lever, buffer spring and spacing ring, and the bottom of intermediate lever is connected with the centre of No. two bearing stop discs can be dismantled, and No. one bearing stop disc is at the top of intermediate lever through its centre bore activity cover, and the spacing ring is fixed at the top of intermediate lever and is located the top of No. one bearing stop disc, and buffer spring cover is at the top of intermediate lever and is located between No. one bearing stop disc and the spacing ring.

Optionally, an adaptor is arranged at the lower end of the intermediate rod, a threaded column is arranged at the lower end of the adaptor, a threaded hole is formed in the middle of the second bearing stop disc, and the threaded column is connected in the threaded hole.

Optionally, an annular groove is arranged in the middle of the first bearing stop disc, and the bottom of the buffer spring is embedded into the annular groove in use.

Optionally, the bottom surface and the side of the limit groove are both provided with rubber protection layers.

Optionally, a hanging ring connected with a hanging hook of an external crane is arranged at the upper end of the fixing frame.

Optionally, the bottom of mount corresponds every shock strut and is equipped with engaging lug and connecting bolt respectively, and the engaging lug is fixed in the edge of bearing dish, and the engaging lug outwards protrudes, and the centre of shock strut is equipped with the threaded connection hole, is equipped with the fixed orifices on the engaging lug, and connecting bolt passes the fixed orifices and is connected with the threaded connection hole.

Optionally, a plastic protection plate is arranged on the bearing plate, and the bearing plate supports the bearing support shell of the bearing support unit body II through the plastic protection plate when in use.

Optionally, a plurality of plastic pressing sheets are arranged below the first bearing stop disc, and the plurality of plastic pressing sheets are uniformly arranged around the center of the first bearing stop disc, and are pressed on the first bearing of the first bearing support unit body through the plastic pressing sheets when in use.

Optionally, a plurality of connecting columns are arranged below the bearing plate, the connecting columns are uniformly arranged along the edges of the middle holes, and the edges of the second bearing stop plate are fixedly connected with the lower ends of the connecting columns.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model is suitable for the storage and transportation of the bearing support unit body of the No. two bearing of the CFM56-7B engine, and utilizes the fixing frame arranged in the box body to protect and fix the bearing support unit body more comprehensively. The bearing plate on the mount carries out main support to No. two bearing support unit bodies, and the spacing groove of No. two bearing stop plate on the mount then overlaps the tip of No. two bearings of No. two bearing support unit bodies, protects the exposed part of No. two bearings, can prevent the rotation and the rocking of No. two bearings, and No. one bearing stop plate on the mount presses the top of No. two bearings of No. two bearing support unit bodies to fix No. one bearing, can avoid the rotation and the rocking of No. one bearing. The utility model fixes the bearing support shell, the first bearing and the second bearing of the first bearing support unit body, and better ensures the safety of the first bearing support unit body in the process of storage and transportation.

The fixing frame can be detached from the shock-absorbing support column, so that the fixing frame and the first and second bearing support units thereon can be separated from the box body more conveniently, and the fixing frame and the first and second bearing support units thereon can be moved conveniently. And can carry out the fixed mounting of mount and bearing support unit body No. two in the box outside, later wholly hang into the box internal fixation again, it is more convenient.

According to the utility model, the damping support column and the damping mechanism are used for damping and damping, so that the influence of external jolt on the first and second bearing support units can be effectively avoided in the transportation process, and better protection is realized.

Drawings

FIG. 1 is a schematic cross-sectional view of a storage and transportation tank of the present utility model;

FIG. 2 is a schematic cross-sectional view of a mount of the present utility model;

FIG. 3 is a schematic top view of the mount of the present utility model installed in a case;

FIG. 4 is a schematic cross-sectional view of a bearing support unit of the CFM56-7B engine secured within the storage and shipping case of the present utility model.

The meaning of the reference numerals in the figures:

1-a box body; 2-a case cover; 3-hanging rings; 3.1-lower column; 4-bearing stop disc number one; 4.1-annular grooves; 4.2-a second mounting hole; 5-an intermediate lever; 6-a bearing plate; 6.1-mesopores; 6.2-a first mounting hole; 7-connecting lugs; 8-a shock strut; a No. 9-second bearing stop disc; 9.1-a limit groove; 10-reinforcing bars; 11-a rubber protective layer; 12-an adapter; 12.1-a threaded post; 13-a plastic protective plate; 14-connecting columns; 15-plastic tabletting; 16-a buffer spring; 17-limiting rings; 18-connecting bolts; 19-fixing bolts; 20-a bearing support housing; 20.1-first perforations; 21-bearing number two; end parts of No. 21.1-No. two bearings; 22-bearing number one; 22.1-end of bearing number one.

Detailed Description

The utility model is further described below with reference to examples.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Examples:

the CFM56-7B engine of this embodiment, as shown in FIGS. 1-3, has a first bearing support unit, a second bearing support unit, and a storage and transport case, which includes a case 1 and a holder provided in the case.

The box 1 of this embodiment is the tetragonal body, and it adopts corrosion resistant plate to weld to form sealedly, and the higher authority of box 1 is the opening, is covered with case lid 2 in the opening part, is equipped with the rubber seal strip between the upper edge of case lid 2 and box 1, and the rubber seal strip passes through conventional mode installation, forms sealedly between case lid 2 and box 1 through the rubber seal strip, and the inner space of box 1 is sealed space after covering case lid 2.

Two transverse reinforcing rods 10 are arranged at the bottom of the box body 1, and two shock absorption struts 8 are respectively fixed on each reinforcing rod 10 in the embodiment. The shock strut 8 is used for cushioning shock absorption, and conventional devices, such as rubber columns for shock absorption, spring shock mounts, and the like, are adopted. The bottom of the fixing frame is detachably connected with the shock strut 8, so that the fixing frame and the first and second bearing supporting units thereon can be conveniently arranged in the box body, and are also conveniently detached from the box body.

As shown in fig. 2, the fixing frame includes a bearing plate 6, a bearing stop plate 4 and a bearing stop plate 9. The bearing plate 6 is used for bearing and fixing a bearing support shell 20 of a bearing support unit body, and the bearing plate 6 bears the whole weight of the bearing support unit body. The structure of the bearing plate 6 for fixing the bearing support shell 20 is as follows: the bearing support housing 20 is provided with a plurality of first perforations 20.1 on the larger end edge thereof, the first perforations 20.1 are uniformly distributed around the center of the bearing support housing 20, the edge of the bearing plate 6 is provided with a plurality of first mounting holes 6.2, the plurality of first mounting holes 6.2 are arranged around the center of the bearing plate 6, when the bearing support housing 20 is aligned and placed on the bearing plate 6, the positions of the first mounting holes 6.2 are aligned with the first perforations 20.1 at the bottom of the bearing support housing 20, and at the moment, the bearing plate 6 and the bearing support housing 20 can be fixed together by connecting through the first mounting holes and the first perforations through the fixing bolts 19.

The middle part of the bearing plate 6 is provided with a middle hole 6.1, the diameter of the middle hole 6.1 is larger than that of the exposed end part of the second bearing, the second bearing stop plate 9 is just opposite to the lower part of the middle hole 6.1, a certain distance is arranged between the second bearing stop plate 9 and the bearing plate 6, the middle of the second bearing stop plate 9 is provided with a concave limiting groove 9.1, and the limiting groove 9.1 is used for being matched with the end part 21.1 of the second bearing sleeved on the second bearing supporting unit body, so that the exposed part of the second bearing 21 is protected, and the rotation and the shaking of the second bearing 21 can be prevented.

In the embodiment, the rubber protection layers 11 are arranged on the bottom surface and the side surface of the limiting groove 9.1, so that the end part 21.1 of the second bearing can be better protected.

The fixed structure of the second bearing stop disc 9 and the bearing disc 6 is as follows: a plurality of connecting columns 14 are arranged below the bearing plate 6, the connecting columns 14 are vertically downward, the connecting columns 14 are uniformly arranged along the edge of the middle hole 6.1, and the edge of the second bearing stop plate 9 is fixedly connected with the lower end of the connecting columns 14 through bolts.

The first bearing stop disc 4 is arranged at the top of the fixing frame through the buffer mechanism, and the first bearing stop disc 4 is used for being pressed on the end face of the end part 22.1 of the first bearing supporting unit body and is fixedly connected with the end face of the end part 22.1 of the first bearing, so that the rotation and the shaking of the first bearing 22 can be prevented. The first bearing stop disc 4 fixes the first bearing 22 in the following structure: the end face of the exposed end part of the first bearing 22 is provided with a plurality of second perforations, the second perforations are uniformly distributed around the center of the first bearing 22, the first bearing stop disc 4 is provided with a plurality of second mounting holes 4.2, the second mounting holes 4.2 are arranged around the center of the first bearing stop disc 4, when the first bearing stop disc 4 is aligned and pressed on the end face of the first bearing 22, the positions of the second mounting holes 4.2 are aligned with the second perforations of the end face of the first bearing 22, and at the moment, the first bearing stop disc and the exposed end part of the first bearing can be fixed together by connecting through the fixing bolts 19.

The buffer mechanism of the embodiment comprises a middle rod 5, a buffer spring 16 and a limiting ring 17, wherein the bottom of the middle rod 5 is detachably connected with the middle of a second bearing stop disc 9, a first bearing stop disc 4 is movably sleeved on the top of the middle rod 5 through a middle hole of the middle rod, the limiting ring 17 is fixed on the top of the middle rod 5 and is positioned above the first bearing stop disc 4, and the buffer spring 16 is sleeved on the top of the middle rod 5 and is positioned between the first bearing stop disc 4 and the limiting ring 17. In use, the bearing stop disc 4 presses against the end face of the bearing 22 of the bearing support unit, the buffer spring 16 acting on the bearing stop disc 4.

The bottom of the intermediate lever 5 is detachably connected with the middle of the bearing stop disk 9 No. two by the following structure: an adapter piece 12 is arranged at the lower end of the intermediate rod 5, a threaded column 12.1 is arranged at the lower end of the adapter piece 12, a threaded hole is arranged in the middle of the second bearing stop disc 9, and the threaded column 12.1 is connected in the threaded hole.

Wherein an annular groove 4.1 is arranged in the middle of the first bearing stop disc 4, and the bottom of the buffer spring 16 is embedded into the annular groove 4.1 when in use.

In the embodiment, the hanging ring 3 used for being connected with the hanging hook of the external crane is arranged at the upper end of the fixing frame, and the fixing frame and the bearing support unit body on the fixing frame can be conveniently moved through the external crane by the hanging ring 3.

The mounting structure of rings 3 department is: the lower end of the lifting ring 3 is provided with a lower column body 3.1, the lower column body 3.1 is connected with a threaded hole at the top of the middle rod 5 through a threaded column at the lower end of the lower column body 3.1, a limiting ring 17 is fixedly arranged at the upper end of the lower column body 3.1, and a buffer spring 16 is sleeved on the lower column body 3.1.

The bottom of mount and shock strut 8 detachable connection's structure is: the bottom of the fixing frame is provided with a connecting lug 7 and a connecting bolt 18 corresponding to each shock strut 8 respectively, the connecting lug 7 is fixed at the edge of the bearing disc 6, the connecting lug 7 protrudes outwards, a threaded connecting hole is formed in the middle of each shock strut 8, a fixing hole is formed in the connecting lug 7, and the connecting bolt 18 penetrates through the fixing hole and is connected with the threaded connecting hole, so that the connecting lug 7 is fixed on the shock strut 8.

In this embodiment, the plastic protection board 13 is arranged on the bearing disc 6, the plastic protection board 13 is in a circular ring shape, and the bearing disc 6 supports the bearing support shell 20 of the bearing support unit body No. two through the plastic protection board 13 during use, so that the damage to the end surface of the bearing support shell 20 can be better avoided.

The plastic pressing piece 15 is arranged below the first bearing stop disc 4, the plastic pressing piece 15 is fixed through a bolt, the plastic pressing piece 15 is uniformly arranged around the center of the first bearing stop disc 4, and the plastic pressing piece 14 is pressed on the end face of the end 22.1 of the first bearing of the second bearing support unit body during use, so that the end face of the first bearing 22 can be better prevented from being damaged.

As shown in fig. 4 (the bearing support unit with the number two bearing support unit shown in the drawing is a simplified schematic diagram), the mode of fixing the bearing support unit with the number two bearing support unit of the CFM56-7B engine by the storage and transportation box is as follows: firstly, fixing a first bearing support unit body outside a box body 1 through a fixing frame; the fixing frame is used for fixing the bearing support unit body II, wherein the bearing support unit body II is arranged on the bearing disc 6, the larger end part of the bearing support shell 20 of the bearing support unit body II faces downwards and is pressed on the plastic protection plate 13 on the bearing disc 6, then the bearing disc 6 and the end part of the bearing support shell 20 are fixed together through the fixing bolt 19, at the moment, the end part 21.1 of the bearing support unit body II extends out of the lower part of the bearing support shell 20, the end part 21.1 of the bearing body II is embedded into the limit groove 9.1 of the bearing stop disc 9 and is propped against the rubber protection layer 11, and the end part of the bearing 22 of the bearing support unit body II is exposed on the upper part of the bearing support shell 20; then, the middle rod 5 is inserted from above, the middle rod 5 passes through the middle hole of the bearing support unit body II and connects the bottom of the middle rod 5 with the middle of the bearing stop disc 9 II, at this time, the bearing stop disc 4 on the middle rod 5 presses the end face of the bearing 22I, and the buffer spring 16 acts on the bearing stop disc 4I; after that, the bearing stop disc 4 and the end 22.1 of the bearing are fixed together by means of the fixing bolt 19; thereby completing the fixation of the fixing frame to the first and second bearing support unit bodies; then, the fixing frame and the bearing support unit body II on the fixing frame are moved into the box body 1 together through an external crane, the connecting lugs 7 are aligned with the shock absorption support posts 8, and the connecting bolts 18 are connected, so that the fixing of the fixing frame and the box body 1 is completed; finally, the cover 2 is sealed.

The above-mentioned embodiments of the present utility model are not intended to limit the scope of the present utility model, and the embodiments of the present utility model are not limited thereto, and all kinds of modifications, substitutions or alterations made to the above-mentioned structures of the present utility model according to the above-mentioned general knowledge and conventional means of the art without departing from the basic technical ideas of the present utility model shall fall within the scope of the present utility model.

Claims

1. A CFM56-7B engine a number two bearing support unit body stores transport case, its characterized in that: the device comprises a box body and a fixing frame arranged in the box body, wherein a shock absorption support is arranged at the bottom of the box body, and the bottom of the fixing frame is detachably connected with the shock absorption support; the fixing frame comprises a bearing disc, a first bearing stop disc and a second bearing stop disc, wherein the bearing disc is used for supporting and fixing a bearing support shell of a first bearing support unit body, a middle hole is formed in the middle of the bearing disc, the second bearing stop disc is right opposite to the lower portion of the middle hole, a concave limiting groove is formed in the middle of the second bearing stop disc, the limiting groove is used for being matched with the end portion of a second bearing of the first bearing support unit body, the first bearing stop disc is arranged at the top of the fixing frame through a buffer mechanism, and the first bearing stop disc is used for being pressed on the end face of the first bearing support unit body and fixedly connected with the end face of the first bearing.

2. The CFM56-7B engine No. two bearing support unit storage and transportation case according to claim 1, wherein: the buffering mechanism comprises a middle rod, a buffering spring and a limiting ring, wherein the bottom of the middle rod is detachably connected with the middle of the second bearing stop disc, the first bearing stop disc is movably sleeved at the top of the middle rod through a middle hole of the first bearing stop disc, the limiting ring is fixed at the top of the middle rod and is located above the first bearing stop disc, and the buffering spring is sleeved at the top of the middle rod and is located between the first bearing stop disc and the limiting ring.

3. The CFM56-7B engine No. two bearing support unit storage and transportation case according to claim 2, wherein: the lower extreme of intermediate lever is equipped with the adaptor, the lower extreme of adaptor is equipped with the screw thread post the centre of No. two bearing stop discs is equipped with the screw hole, the screw thread post is connected in the screw hole.

4. The CFM56-7B engine No. two bearing support unit storage and transportation case according to claim 2, wherein: the middle part of the first bearing stop disc is provided with an annular groove, and the bottom of the buffer spring is embedded into the annular groove when the buffer spring is used.

5. The CFM56-7B engine No. two bearing support unit storage and transportation case according to claim 1, wherein: the bottom surface and the side of spacing groove all are equipped with the rubber protective layer.

6. The CFM56-7B engine No. two bearing support unit storage and transportation case according to claim 1, wherein: the upper end of the fixing frame is provided with a hanging ring which is used for being connected with a hanging hook of an external crane.

7. The CFM56-7B engine No. two bearing support unit storage and transportation case according to claim 1, wherein: the bottom of mount corresponds every shock strut is equipped with engaging lug and connecting bolt respectively, the engaging lug is fixed the edge of bearing dish, the engaging lug outwards protrudes, the centre of shock strut is equipped with the threaded connection hole, be equipped with the fixed orifices on the engaging lug, connecting bolt pass the fixed orifices and with the threaded connection hole is connected.

8. The CFM56-7B engine No. two bearing support unit storage and transportation case according to claim 1, wherein: the upper surface of bearing plate is equipped with the plastics protection shield, during the use the bearing plate passes through the bearing support casing of a number two bearing support unit body carries out the bearing.

9. The CFM56-7B engine No. two bearing support unit storage and transportation case according to claim 1, wherein: the bearing stop disc is characterized in that a plurality of plastic pressing sheets are arranged below the bearing stop disc, the plastic pressing sheets are uniformly arranged around the center of the bearing stop disc, and the plastic pressing sheets are pressed on the bearing of the bearing support unit body.

10. The CFM56-7B engine No. two bearing support unit storage and transportation case according to claim 1, wherein: the bearing plate is characterized in that a plurality of connecting columns are arranged below the bearing plate, the connecting columns are uniformly arranged along the edges of the middle holes, and the edges of the second bearing stop plate are fixedly connected with the lower ends of the connecting columns.